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Naddik [55]
3 years ago
11

find the value of y if the line through the two given points is to have the indicated slope. (-3,y) and (-11,8), m = -2

Mathematics
2 answers:
Flauer [41]3 years ago
6 0

\bf (\stackrel{x_1}{-3}~,~\stackrel{y_1}{y})\qquad(\stackrel{x_2}{-11}~,~\stackrel{y_2}{8})\\\\\\slope = m\implies\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{8-y}{-11-(-3)}~~=~~\stackrel{m}{-2}\\\\\\\cfrac{8-y}{-11+3}=-2\implies \cfrac{8-y}{-8}=-2\implies 8-y=16\implies -8=y

o-na [289]3 years ago
5 0

=  \frac{y - y_{2}}{x - x _{2}}  \\   - 2 =  \frac{y - ( - 11)}{ - 3 - 8}  \\  - 2 =  \frac{y + 11}{ - 11}  \\  - 2 + 1 = y \\ y =  - 1
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